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Allow pretty-printing JSON output #5

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Allow pretty-printing JSON output #5

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2 changes: 2 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@ assert(stringify('foo') === '"foo"');
assert(stringify('foo\u2028bar\u2029baz') === '"foo\\u2028bar\\u2029baz"');
assert(stringify(new Date('2014-12-19T03:42:00.000Z')) === 'new Date("2014-12-19T03:42:00.000Z")');
assert(stringify({foo: 'bar'}) === '{"foo":"bar"}');
assert(stringify({foo: 'bar'}, 4) === '{\n "foo": "bar"\n}');
assert(stringify({foo: 'bar'}, '\t') === '{\n\t"foo": "bar"\n}');
assert(stringify(undefined) === 'undefined');
assert(stringify(null) === 'null');
assert(
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4 changes: 2 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
@@ -1,14 +1,14 @@
'use strict';

module.exports = stringify;
function stringify(obj) {
function stringify(obj, indentation) {
if (obj instanceof Date) {
return 'new Date(' + stringify(obj.toISOString()) + ')';
}
if (obj === undefined) {
return 'undefined';
}
return JSON.stringify(obj)
return JSON.stringify(obj, undefined, indentation)
.replace(/\u2028/g, '\\u2028')
.replace(/\u2029/g, '\\u2029')
.replace(/</g, '\\u003C')
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3 changes: 3 additions & 0 deletions test/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,9 @@ assert(stringify('foo') === '"foo"');
assert(stringify('foo\u2028bar\u2029baz') === '"foo\\u2028bar\\u2029baz"');
assert(stringify(new Date('2014-12-19T03:42:00.000Z')) === 'new Date("2014-12-19T03:42:00.000Z")');
assert(stringify({foo: 'bar'}) === '{"foo":"bar"}');
assert(stringify({foo: 'bar'}, undefined) === '{"foo":"bar"}');
assert(stringify({foo: 'bar'}, 3) === '{\n "foo": "bar"\n}');
assert(stringify({foo: 'bar'}, ' \t') === '{\n \t"foo": "bar"\n}');
assert(stringify(undefined) === 'undefined');
assert(stringify(null) === 'null');
assert(
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